Error while trying to connect to the endpoint. Cannot borrow client for ssl

Question

This error is being printed in the WSO2 API Manager wso2carbon.log..

sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:88)
    at org.wso2.carbon.databridge.agent.endpoint.binary.BinarySecureClientPoolFactory.createClient(BinarySecureClientPoolFactory.java:53)
    ... 9 more
TID: [-1] [] [2016-12-28 22:16:04,043] ERROR {org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker} -  Error while trying to connect to the endpoint. Cannot borrow client for ssl://192.168.1.36:9711 {org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker}
org.wso2.carbon.databridge.agent.exception.DataEndpointAuthenticationException: Cannot borrow client for ssl://192.168.1.36:9711
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:100)
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.run(DataEndpointConnectionWorker.java:43)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.wso2.carbon.databridge.agent.exception.DataEndpointException: Error while opening socket to 192.168.1.36:9711. Connection refused: connect
    at org.wso2.carbon.databridge.agent.endpoint.binary.BinarySecureClientPoolFactory.createClient(BinarySecureClientPoolFactory.java:58)
    at org.wso2.carbon.databridge.agent.client.AbstractClientPoolFactory.makeObject(AbstractClientPoolFactory.java:39)
    at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1212)
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:92)
    ... 6 more
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)

Can any one help me to fix this?I am just using WSO2 API Manager alone

Answer 1

Here what is failing is throttling data publishing. Possible cause is thrift port (9711) is opened on a different network interface than 192.168.1.36.

You can configure correct IP in <ThrottlingConfigurations> section of api-manager.xml. (Replace ${carbon.local.ip})

<ThrottlingConfigurations>
    <EnableAdvanceThrottling>true</EnableAdvanceThrottling>
    <DataPublisher>
        <Enabled>true</Enabled>
        <Type>Binary</Type>
        <ReceiverUrlGroup>tcp://${carbon.local.ip}:${receiver.url.port}</ReceiverUrlGroup>
        <AuthUrlGroup>ssl://${carbon.local.ip}:${auth.url.port}</AuthUrlGroup>
        <Username>${admin.username}</Username>
        <Password>${admin.password}</Password>